Thread pool counters

You can use the thread pool counters that the Performance Monitoring Infrastructure (PMI) and Tivoli Performance Viewer (TPV) collect to monitor your thread pool activity.

Counter definitions

Name	Key	Description	Granularity	Type	Level	Overhead
CreateCount	threadPoolModule.threadCreates	The total number of threads created	Per thread pool	CountStatistic	All	Low
DestroyCount	threadPoolModule.threadDestroys	The total number of threads destroyed	Per thread pool	CountStatistic	All	Low
ActiveCount	threadPoolModule.activeThreads	The number of concurrently active threads	Per thread pool	BoundedRangeStatistic	Extended	High
PoolSize	threadPoolModule.poolSize	The average number of threads in pool	Per thread pool	BoundedRangeStatistic	Basic	High
PercentMaxed	threadPoolModule.percentMaxed	The average percent of the time that all threads are in use	Per thread pool	BoundedRangeStatistic	All	High
DeclaredthreadHungCount	threadPoolModule.declaredThreadHung	The number of threads declared hung	Per thread pool	CountStatistic	All	Max
ClearedThreadHangCount	threadPoolModule.declaredThreadHangCleared	The number of thread hangs cleared	Per thread pool	CountStatistic	All	Max
ConcurrentHungThreadCount	threadPoolModule.concurrentlyHungThreads	The number of concurrently hung threads	Per thread pool	BoundedRangeStatistic	All	Max
ActiveTime	threadPoolModule.activeTime	The average time in milliseconds the threads are in active state	Per thread pool	TimeStatistic	All	Max

 

Reference topic